add new field

model/api/model.go

@@ -30,6 +30,7 @@ type HistoryInfo struct {
 	TokenSymbol  string `json:"token_symbol" bson:"token_symbol"`
 	UrlTarget    string `json:"url_target" bson:"url_target"`
 	Status       string `json:"status" bson:"status"`
+	FeeAmount    string `json:"fee_amount" bson:"fee_amount"`
 	ConfirmCount int    `json:"confirm_count" bson:"confirm_count"`
 	RejectCount  int    `json:"reject_count" bson:"reject_count"`
 }